Volume: 1, 2022
1st International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: E005
DOI: https://doi.org/10.24326/ICDSUPL1.E005
Published online: 26 April 2022
ICDSUPL, 1, E005 (2022)
Biochar amendment improves methane uptake and methanotroph abundance in soil
Adam Kubaczyński1, Anna Walkiewicz1, Anna Pytlak1, Jarosław Grządziel2, Anna Gałązka2, Małgorzata Brzezińska1
1 Department of Natural Environment Biogeochemistry, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290, Lublin, Poland
2 Department of Agricultural Microbiology, Institute of Soil Science and Plant Cultivation–State Research Institute (IUNG-PIB), Czartoryskich 8, 24-100, Puławy, Poland
* Corresponding author: a.kubaczynski@ipan.lublin.pl
Abstract
Progressive climate change has strong negative impacts on agroecosystems. The driving force behind climate change is the rapid increase in greenhouse gas (GHG) emissions. Since pre-industrial age, the global atmospheric concentrations of methane (CH4) and carbon dioxide (CO2) increased by 162% and 49%, respectively. Soil has a real input in global GHG budget, which is estimated for a 5–20% of CO2 and 10–30% of CH4. Another growing problem of the agriculture is the disposal of waste biomass. A treatment that can be beneficial for both waste management and reducing greenhouse gas emissions is biochar soil enrichment. Biochar is a product of waste biomass pyrolysis. Its high porosity and large surface area improve soil structure. Moreover, the biochar may be a source of biogenic elements (C, N) and chemical compounds, such as alkali oxides. Biochar addition to soil thus leads to enhancement of soil physicochemical properties and may have a positive effect on soil microbiome, which is important as activity and abundance of soil microorganisms mainly determine the GHG exchange between soil and the atmosphere. The aim of study was to determine the influence of wood offcuts biochar on the CH4 oxidation and CO2 emission from Haplic Luvisol. These are mainly biological processes, therefore, to better understand the GHG exchange, composition of the soil microbial communities was determined. The main soil physicochemical parameters, such as pH and C content were also analysed. It was confirmed that biochar amendment improves CH4 oxidation, and enhanced the abundance of methanotrophic bacteria in the tested soil. The presented research also revealed the higher CO2 emission after soil enrichment with biochar, but that was just a short-term effect.
Research was conducted under the project “Water in soil – satellite monitoring and improving the retention using biochar” no. BIOSTRATEG3/345940/7/NCBR/2017 which was financed by Polish National Centre for Research and Development.
How to cite
A. Kubaczyński, A. Walkiewicz, A. Pytlak, J. Grządziel, A. Gałązka, M. Brzezińska, 2022. Biochar amendment improves methane uptake and methanotroph abundance in soil. In: 1st International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL1/E005